There is a new configuration for the price view (a_calendar18/priceprod or a_calendar19/priceprod2): *ADR = actual daily rate of a specific article.
Position 1-4: *ADR
Position 6-13: article number
Position 14-15: offset of years (e.g. 0 = this year, 2 = two years ago, -1 = next year)
The description of the 'priceprod' entries is the label for the calendar.
Example for the control field:
*ADR 100 0 -> ADR of article 100 this year
*ADR 200 1 -> ADR of article 200 last year